NARDA LR-01, User Manual

Page: 148 / 194

9-20 Command protocol
?WME ifv This query command #LR?WME i * requests the instantaneous % level related to the
desired standard. This is only for EHP-2B-xx probes.
I=1: Reference Standard (same reading as per ?MES command)
I=2: Standard 2
I=3: Standard 3
I=4: Standard 4
The order of the standards is:
- for -01 and -02 models: ICNIRP98OCC, ICNIRP98GP, SC6CONTR, SC6UNCONTR.
- for -03 and -04 models ICNIRP2020OCC, ICNIRP2020GP, FCCCONTR, FCCUNCONTR.
The reply is in the format:
WME=E;H;%;*; where:
•
E is the value for the Electric field;
•
H is the value for the Magnetic field
•
% is the measurement unit label
WME=NA for probes other than EHP-2B-xx
Example of reply : WME=45.96;2137.43;%;*; which indicates the E field is at almost 46%,
H field is 2137% of the selected standard.
By adding the
f character after the index i , it is possible to include battery voltage and GPS
data to the reply.
Following is the standard NMEA GPRMC and/or GNRMC string that reports the
information:
•
Time (UTC)
•
Navigation receiver warning A = OK, V = warning
•
Latitude (deg. min North/South)
•
Longitude (deg. min East/West)
•
Speed over ground (Knots)
•
Course Made Good
•
Date (UTC)
•
Magnetic variation (deg)
•
Mandatory checksum
Following is the standard NMEA GPGGA and/or GNGGA string that reports the information:
•
Time (UTC)
•
Latitude (deg. min North/South)
•
Longitude (deg. min East/West)
•
Position Fix
•
Satellites in use
•
Horizontal Dilution of Precision
•
MSL Altitude in m
•
Geoid Separation in m
•
Mandatory checksum
The reply is terminated by the string “-->” followed by date and time from the unit.
Example of reply
: WME=46.13;1969.20;%;*;3.78V;
$GPRMC,162842.710,A,4341.1585,N,01047.9364,E,0.09,255.44,190822,,,A*69
;$GPGGA,162842.710,4341.1585,N,01047.9364,E,1,9,0.99,38.3,M,47.8,M,,*6A
; -->23/09/22 00:07:00*
The NMEA degrees minutes can be convert to decimal degree
(see ?GPS command)